Roller skate



FIG. 1 is a perspective view of a roller skate showing my new design;

FIG. 2 is a side perspective view thereof;

FIG. 3 is a side perspective view of the side opposite that shown in FIG. 2;

FIG. 4 is a front perspective view thereof;

FIG. 5 is a rear perspective view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a side perspective view of a modified form of the design shown in FIGS. 1 through 6;

FIG. 8 is a side perspective view thereof;

FIG. 9 is a perspective view of the side opposite that shown in FIG. 8;

FIG. 10 is a front perspective view thereof;

FIG. 11 is a rear perspective view thereof; and

FIG. 12 is a bottom plan view thereof. 

The ornamental design for a roller skate, substantially as shown and described. 